Home / 20,170.10-30,287.55-15,245.30

Finding the Fourth Proportional to 20,170.10, 30,287.55 and 15,245.30

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Solution

The fourth proportional to 20,170.10, 30,287.55 and 15,245.30 is: 22,892.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.10 : 30,287.55 = 15,245.30 : x
  2. Step 2: Convert to fraction form
    20,170.10/30,287.55 = 15,245.30/x
  3. Step 3: Cross multiply
    20,170.10x = 30,287.55 × 15,245.30
  4. Step 4: Simplify right side
    20,170.10x = 461,742,786.02
  5. Step 5: Solve for x
    x = 461,742,786.02/20,170.10
  6. Step 6: Final answer
    x = 22,892.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.